φόσσατον

τό
A. fossatum, boundary, CIG 5187b9 (Ptolemais in Cyrenalca, Edict. Anastasii), IGRom. 3.1175 (Syria), Suid. s.v. σέδετον, Zonar.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project